Sericostoma, Latreille, 1825

Sipahiler, Füsun, 2021, Males of the genus Sericostoma Latreille 1825 in Turkey (Trichoptera Sericostomatidae), Zootaxa 4965 (3), pp. 483-500 : 498-499

Key to the adult males of Sericostoma in Turkey

1. In lateral view, mesoventral branch of each lateral prolongation of segment X directed ventrad......................….2

- Mesoventral branch directed posterad or posteroventrad....................................................... 3

2. Mesoventral branch of each lateral prolongation of segment X short, stout, truncate at apex ( Figs 7, 8............... S . ida

- Mesoventral branch long, triangular, pointed at apex ( Figs 12, 13 )..................................... S. grusiense

4. Mesoventral branch of each lateral prolongation of segment X half as long as dorsal branch.......................... 5

- Mesoventral branch of each lateral prolongation more than half as long as dorsal branch............................. 7

5. Mesoventral branch of each lateral prolongation of segment X nearly parallel-side and close to dorsal branch in lateral view. ................................................................................................... 6

- Mesoventral branch triangular and widely separated from dorsal branch in lateral view..................... S. flavicorne

6. Preanal appendages digitate, smaller than obliquely truncate basoventral branches of lateral prolongations of segment X in lateral view; in dorsal view, dorsal branches of lateral prolongations each bearing small, pointed subapical projection on inner edge..................................................................................... S. taskent sp. n.

- Preanal appendages clavate, larger than acute basoventral branches of lateral prolongations; in dorsal view, dorsal branches of lateral prolongations without small, pointed subapical projections................................ S. yuvarlakcay sp. n.

7. Dorsal branches of lateral prolongations of segment X slender in dorsal and lateral views; mesoventral branches 2/3 as long as dorsal branches ( Fig. 36 ); apical dilatations of ventral branches of inferior appendages small ( Fig. 38 ).... S. pinargozu sp. n.

- Dorsal branches of lateral prolongations thick in dorsal and lateral views; mesoventral branches of lateral prolongations more than 2/3 as long as dorsal branches; apical dilations of ventral branches of inferior appendages enlarged................. 8

8. Mesoventral branch of each lateral prolongation of segment X 4/5 as long as dorsal branch ( Fig. 26 ); ventral branches of inferior appendages sinuate, apicomesally quadrangular in ventral view ( Fig. 28 )...................... S. dimcay sp. n.

- Mesoventral branch of each lateral prolongation 3/4 as long as dorsal branch; ventral branches of inferior appendages straight, apicomesally triangular in ventral view ( Fig. 24 )................................................... S. alakir sp. n.

Figures

FIGS.6-10.SericostomaidaSİPAHİLER2000,male:6,headandrightmaxillarypalp,rightlateral.7-10,malegenitalia: 7, left lateral; 8, dorsal; 9, ventral. 10, phallic apparatus, left lateral.Abbreviations: bb = basoventral branch of lateral prolongation of segment X; bc= basoventral carina; db= dorsal branch of lateral prolongation of segment X (paired); dbi= dorsal branch of inferior appendage (paired); dl= dorsal lobe of dorsal branch of inferior appendage (paired); lp= lateral prolongation of segment X (paired); mb= mesoventral branch of lateral prolongation of segment X (paired); mp= maxillary palp (paired); sıx= segment IX; sx= segment X; vb= ventral branch of inferior appendage (paired).

FIGS.11–15. Sericostoma grusiense Martynov 1913, male: 11, head and right maxillary palp, right lateral. 12– 14, male genitalia: 12, left lateral; 13, dorsal; 14, ventral. 15, phallic apparatus, left lateral. Abbreviations: bb = basoventral branch of lateral prolongation of segment X; bc= basoventral carina; db= dorsal branch of lateral prolongation of segment X (paired); dbi= dorsal branch of inferior appendage (paired); dl= dorsal lobe of dorsal branch of inferior appendage (paired); lp= lateral prolongation of segment X (paired); mb= mesoventral branch of lateral prolongation of segment X (paired); mp= maxillary palp (paired) sıx= segment IX; sx= segment X; vb= ventral branch of inferior appendage (paired).

FIGS. 35–39. Sericostoma pinargozu sp. n., male: 35, head and right maxillary palp, right lateral. 36–39, male genitalia: 36, left lateral; 37, dorsal; 38, ventral. 39, phallic apparatus, left lateral. Abbreviations: bb = basoventral branch of lateral prolongation of segment X; bc = basoventral carina; db = dorsal branch of lateral prolongation of segment X (paired); dbi = dorsal branch of inferior appendage (paired); dl = dorsal lobe of dorsal branch of inferior appendage (paired); lp = lateral prolongation of segment X (paired); m = mesoventral branch of lateral prolongation of segment X (paired); mp = maxillary palp (paired); pa = preanal appendage (paired); sıx = segment IX; sx = segment X; vb = ventral branch of inferior appendage (paired).

FIGS. 26–29. Sericostoma dimcay sp. n., male: 26–29, male genitalia: 26, left lateral; 27, dorsal; 28, ventral 29, phallic apparatus, left lateral. Abbreviations: bb = basoventral branch of lateral prolongation of segment X; bc = basoventral carina; db = dorsal branch of lateral prolongation of segment X (paired); dl = dorsal lobe of inferior appendage (paired); dbi = dorsal branch of inferior appendage (paired); dl = dorsal lobe of dorsal branch of inferior appendage (paired); lp = lateral prolongation of segment X (paired); mb: mesoventral branch of lateral prolongation of segment X (paired); mp = maxillary palp (paired); pa = preanal appendage (paired); sıx = segment IX; sx = segment X; vb = ventral branch of inferior appendage (paired).

FIGS. 21-25. Sericostoma alakir sp. n., male: 21, head and right maxillary palp, right lateral. 22–25, male genitalia: 22, left lateral; 23, dorsal; 24, ventral. 25, phallic apparatus, left lateral. Abbreviations: bb = basoventral branch of lateral prolongation of segment X; bc = basoventral carina; db = dorsal branch of lateral prolongation (paired); dbi = dorsal branch of inferior appendage of segment X (paired); dl = dorsal lobe of dorsal branch of inferior appendage (paired); lp = lateral prolongation of segment X (paired); mb = mesoventral branch of lateral prolongation of segment X (paired); mp = maxillary palp (paired); pa = preanal appendage (paired); sıx = segment IX; sx = segment X; vb = ventral branch of inferior appendage (paired).